| ( | 1 | ÷ | x | ) | − | 1 100 | ÷ | ( | 11 | − | x | ) | − | 99 100 | ÷ | ( | 221 | ÷ | 11 | − | x | ) | = | 0 |
| 方程两边同时乘以: | ( | 11 | − | x | ) |
| ( | 1 | ÷ | x | ) | ( | 11 | − | x | ) | − | 1 100 | − | 99 100 | ÷ | ( | 221 | ÷ | 11 | − | x | ) | × | ( | 11 | − | x | ) | = | 0 |
| 1 | ÷ | x | × | ( | 11 | − | x | ) | − | 1 100 | − | 99 100 | ÷ | ( | 221 | ÷ | 11 | − | x | ) | × | ( | 11 | − | x | ) | = | 0 |
| 方程两边同时乘以: | x |
| 1 | ( | 11 | − | x | ) | − | 1 100 | x | − | 99 100 | ÷ | ( | 221 | ÷ | 11 | − | x | ) | × | ( | 11 | − | x | ) | x | = | 0 |
| 1 | × | 11 | − | 1 | x | − | 1 100 | x | − | 99 100 | ÷ | ( | 221 | ÷ | 11 | − | x | ) | × | ( | 11 | − | x | ) | x | = | 0 |
| 11 | − | 1 | x | − | 1 100 | x | − | 99 100 | ÷ | ( | 221 | ÷ | 11 | − | x | ) | × | ( | 11 | − | x | ) | x | = | 0 |
| 11 | − | 101 100 | x | − | 99 100 | ÷ | ( | 221 | ÷ | 11 | − | x | ) | × | ( | 11 | − | x | ) | x | = | 0 |
| 方程两边同时乘以: | ( | 221 | ÷ | 11 | − | x | ) |
| 11 | ( | 221 | ÷ | 11 | − | x | ) | − | 101 100 | x | ( | 221 | ÷ | 11 | − | x | ) | − | 99 100 | ( | 11 | − | x | ) | x | = | 0 |
| 11 | × | 221 | ÷ | 11 | − | 11 | x | − | 101 100 | x | ( | 221 | ÷ | 11 | − | x | ) | − | 99 100 | ( | 11 | − | x | ) | x | = | 0 |
| 221 | − | 11 | x | − | 101 100 | x | ( | 221 | ÷ | 11 | − | x | ) | − | 99 100 | ( | 11 | − | x | ) | x | = | 0 |
| 221 | − | 11 | x | − | 101 100 | x | × | 221 | ÷ | 11 | + | 101 100 | x | x | − | 99 100 | ( | 11 | − | x | ) | = | 0 |
| 221 | − | 11 | x | − | 22321 1100 | x | + | 101 100 | x | x | − | 99 100 | ( | 11 | − | x | ) | x | = | 0 |
| 221 | − | 34421 1100 | x | + | 101 100 | x | x | − | 99 100 | ( | 11 | − | x | ) | x | = | 0 |
| 221 | − | 34421 1100 | x | + | 101 100 | x | x | − | 99 100 | × | 11 | x | + | 99 100 | x | x | = | 0 |
| 221 | − | 34421 1100 | x | + | 101 100 | x | x | − | 1089 100 | x | + | 99 100 | x | x | = | 0 |
| 221 | − | 464 11 | x | + | 101 100 | x | x | + | 99 100 | x | x | = | 0 |